tigerbangs prescription for deep fringe reception

Tower Guy · 03-23-2009, 07:50 PM

Quote:

Originally Posted by baldini

If you've got a ground loop. What does that mean and how do you fix? I think I might have one. Thanks, Baldini

A ground loop means that two of your devices have different ground potentials. It's usually caused by a wiring problem. The white and bare wires must be connected in the main panel, but nowhere else.

The typical problem is a second connection between the white and bare wires in a branch circuit or subpanel, such as the use of the white wire on the ground wire of an outlet.

stillstuck · 03-27-2009, 07:23 PM

When grounding coax, can I just strip the insulation without cutting the cable, and clamp the ground to the shielding? I'd like to minimize the losses from connectors where possible. I assume I'll need to ground the coax at the base of the tower, then again where it enters the house (120' from tower), and then again in the house to the same ground that the electrical system is grounded to, so that I don't have a ground differential.

Midwest Dxer · 03-27-2009, 08:49 PM

Quote:

Originally Posted by stillstuck

When grounding coax, can I just strip the insulation without cutting the cable, and clamp the ground to the shielding? I'd like to minimize the losses from connectors where possible. I assume I'll need to ground the coax at the base of the tower, then again where it enters the house (120' from tower), and then again in the house to the same ground that the electrical system is grounded to, so that I don't have a ground differential.

Do not strip the insulation! And ,no you don't have to ground at the tower base,just at the house with a grounding block.

EricS · 05-05-2009, 11:01 PM

Here is my TV Fool Results

http://www.tvfool.com/?option=com_wr...7f142790cf0e85

I would like to pick up as many as these channels as possible.

I am very new to this and would like to know if I need the items in the prescription post or if I need something different.
Also the dish network mast is on the side of the house aprox. 20 feet in the air can I use this or do I need somethind different.

Please help I am wanting to save some cash and cancel the dish service we currently have.

Eric Smith

Tower Guy · 05-06-2009, 05:41 AM

Quote:

Originally Posted by EricS

I am very new to this and would like to know if I need the items in the prescription post or if I need something different.

The prescription isn't right for you. WSIL and WTCT are very strong and would overload a 7777 preamp. You also have no low band VHF stations.

WAZE on channel 20 is the weakest signal that you could receive. The UHF antenna with the highest gain on channel 20 is the HD 8800. The VHF stations would work with a Y10-7-13. Add the antennas together with a UVSJ and then an HDP-269 preamp.

Consider extra height to make reception of WAZE reliable.

EricS · 05-06-2009, 10:14 AM

When the items you mentioned require a rotator or not?

EricS

**rbinck** · 05-06-2009, 10:42 AM

Quote:

Originally Posted by EricS

When the items you mentioned require a rotator or not?

EricS

If your stations transmitters are in different directions from your antenna, you will need a rotator to be able to aim your antenna at the different transmitters.

geoffleach · 05-08-2009, 05:57 PM

Here's the TvFool: http://www.tvfool.com/?option=com_wr...7f144679d26583

My channels of interest are HDTV 21-61; you'll note that they are all due east, at about 50 miles.

I'm currently using a 15-year-old RadioShack "All Channel"; reception is fair to excellent, depending on weather. There's also a Winnegard HDA-200 in the circuit.

I've tried an AntennasDirect 91XG; signal strength (reported by my HD HomeRun tuner) was about 15% less. I'm told that this is attributable to the fact that my antenna is about 200 feet below the high point on the vector to the transmitters, and the 91XG does not play well in this situation.

I'd appreciate suggestions for a replacement UHF antenna.

Thanks.

geoffleach · 05-08-2009, 08:02 PM

Oops ... reset. I'm informed that three of my local HD channels are moving from UHF to VHF. (I thought that the main reason for all of this HD stuff was to free up the VHF spectrum for other purposes.) So scratch "UHF only" from the above.

BrianO · 05-08-2009, 11:47 PM

Quote:

Originally Posted by geoffleach

Oops ... reset. I'm informed that three of my local HD channels are moving from UHF to VHF. (I thought that the main reason for all of this HD stuff was to free up the VHF spectrum for other purposes.) So scratch "UHF only" from the above.

The spectrum that is being freed up is that used by channels 52 to 69.

Tower Guy · 05-09-2009, 05:48 AM

Quote:

Originally Posted by EricS

When the items you mentioned require a rotator or not?

Yes, Tigerbang's design includes a rotor. In your case the VHF antenna can be mounted on the mast below the rotor.

Tower Guy · 05-09-2009, 05:55 AM

Quote:

Originally Posted by geoffleach

I'd appreciate suggestions for a replacement UHF antenna.

The HD-8800 has better performance than the 91XG below channel 30. Yet reception will still be marginal. You might consider stacking two antennas and/or an expensive GASFET preamp.

geoffleach · 05-22-2009, 07:59 PM

Quote:

Originally Posted by Tower Guy

The HD-8800 has better performance than the 91XG below channel 30. Yet reception will still be marginal. You might consider stacking two antennas and/or an expensive GASFET preamp.

Sounds like a plan! What's the procedure for merging the output of two (or more?) antennas.

Tower Guy · 05-23-2009, 05:25 AM

Quote:

Originally Posted by geoffleach

What's the procedure for merging the output of two antennas.

http://www.hdtvprimer.com/ANTENNAS/16bay.html

geoffleach · 05-25-2009, 04:07 PM

Quote:

Originally Posted by tigerbangs

The only thing that has changed is to use an AntennasDirect XG-91 in place of the 4228. Everything else is still valid.

This was a few months back. My experience with the XG-91 was that it significantly underperformed my 12-year-old RS VU-210XR. http://www.hdtvprimer.com/ANTENNAS/TemporaryPage.html observies:

Quote:

The bad news is that the new 4228HD and DB-8 are both wrecks.

I'm in a pickle here. Can anyone help?

03-27-2009, 07:23 PM	#887
stillstuck What is HD? Join Date: Dec 2007 Posts: 2	Grounding Antenna Coax? When grounding coax, can I just strip the insulation without cutting the cable, and clamp the ground to the shielding? I'd like to minimize the losses from connectors where possible. I assume I'll need to ground the coax at the base of the tower, then again where it enters the house (120' from tower), and then again in the house to the same ground that the electrical system is grounded to, so that I don't have a ground differential.

05-05-2009, 11:01 PM	#889
EricS My plasma is High Def. Join Date: Feb 2008 Posts: 7	Help Please Here is my TV Fool Results http://www.tvfool.com/?option=com_wr...7f142790cf0e85 I would like to pick up as many as these channels as possible. I am very new to this and would like to know if I need the items in the prescription post or if I need something different. Also the dish network mast is on the side of the house aprox. 20 feet in the air can I use this or do I need somethind different. Please help I am wanting to save some cash and cancel the dish service we currently have. Eric Smith

05-06-2009, 10:14 AM	#891
EricS My plasma is High Def. Join Date: Feb 2008 Posts: 7	Rotator When the items you mentioned require a rotator or not? EricS

05-08-2009, 05:57 PM	#893
geoffleach How can anyone watch standard def? Join Date: Jul 2007 Posts: 15	Reception in the low sierra Here's the TvFool: http://www.tvfool.com/?option=com_wr...7f144679d26583 My channels of interest are HDTV 21-61; you'll note that they are all due east, at about 50 miles. I'm currently using a 15-year-old RadioShack "All Channel"; reception is fair to excellent, depending on weather. There's also a Winnegard HDA-200 in the circuit. I've tried an AntennasDirect 91XG; signal strength (reported by my HD HomeRun tuner) was about 15% less. I'm told that this is attributable to the fact that my antenna is about 200 feet below the high point on the vector to the transmitters, and the 91XG does not play well in this situation. I'd appreciate suggestions for a replacement UHF antenna. Thanks.

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05-08-2009, 08:02 PM	#894
geoffleach How can anyone watch standard def? Join Date: Jul 2007 Posts: 15	Oops ... reset. I'm informed that three of my local HD channels are moving from UHF to VHF. (I thought that the main reason for all of this HD stuff was to free up the VHF spectrum for other purposes.) So scratch "UHF only" from the above.